The end of ads: Coinbase engineer says AI agents could kill the internet’s favorite business model

Erik Reppel, who created the x402 protocol, said that the web economy depends heavily on advertising revenue generated from humans. AI agents bypass that system entirely.

What to know:

• Coinbase Developer Platform head Erik Reppel said at Consensus Miami 2026 that AI agents could disrupt the internet’s ad-based business model because autonomous software ignores online ads entirely.
• Reppel argued that crypto-powered micropayments and Coinbase-backed x402 could help create a new “internet-native” payment system where AI agents automatically pay for content, APIs and digital services.

Coinbase engineering head Erik Reppel offered a glimpse into how artificial intelligence could reshape the economics of the internet, arguing that AI agents may force a shift away from the web’s ad-driven business model.

Speaking onstage at Consensus Miami 2026, Reppel, the founder of the x402 payments protocol and head of engineering at Coinbase Developer Platform, said the internet was originally built around humans interacting with websites, not software interacting with software.

“The internet was designed for humans to use,” Reppel said. “We now live in a world where both humans and computers operate and computers operate computers.”

Today’s web economy depends heavily on advertising revenue generated when humans visit websites and view ads, according to Reppel. But AI agents, he said, bypass that system entirely.

“Agents don’t see those ads. They just ignore those ads completely,” he said.

That dynamic could push the internet toward new monetization models built around native digital payments, particularly stablecoin-powered micropayments.

“If a human visits a website, show them an ad. If an agent visits a website, charge them five cents,” Reppel said.

He framed x402, an open payments protocol built around the long-unused HTTP 402 “Payment Required” status code, as infrastructure for that future. The protocol is designed to let AI agents make automatic payments for APIs, content and digital services using crypto rails.

Reppel said the rise of autonomous AI systems, or what he called the “agentic economy,” could create a massive new market for internet-native payments. He cited estimates projecting the sector could grow to between $3 trillion and $5 trillion within four years.

The comments reflect a broader effort within the crypto industry to position stablecoins and blockchain-based payments as foundational infrastructure for AI-driven commerce.

“Agents really are the browser of the future,” he said.

Read more: AI agents are breaking web economics, but Cloudflare says x402 can help

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Also: Alpenglow upgrade update, Ripple on North Korea hacking threat, Cloudflare on AI agents and web economics

What to know:

Welcome to The Protocol, CoinDesk's weekly wrap of the most important stories in cryptocurrency tech development. I’m Margaux Nijkerk, a reporter at CoinDesk.

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